./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2409cd2f018515417b0b6bf5d396e4bc80c02540769112137ebf388167bdf776 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:07:37,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:07:37,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:07:37,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:07:37,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:07:37,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:07:37,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:07:37,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:07:37,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:07:37,776 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:07:37,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:07:37,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:07:37,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:07:37,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:07:37,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:07:37,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:07:37,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:07:37,781 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:07:37,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:37,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:37,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:07:37,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:07:37,783 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2409cd2f018515417b0b6bf5d396e4bc80c02540769112137ebf388167bdf776 [2025-01-09 04:07:38,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:07:38,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:07:38,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:07:38,038 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:07:38,038 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:07:38,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2025-01-09 04:07:39,223 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8859d9cdc/33463266efff4cb8b7c85ab1cb598928/FLAG2ebf98e89 [2025-01-09 04:07:39,550 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:07:39,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2025-01-09 04:07:39,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8859d9cdc/33463266efff4cb8b7c85ab1cb598928/FLAG2ebf98e89 [2025-01-09 04:07:39,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8859d9cdc/33463266efff4cb8b7c85ab1cb598928 [2025-01-09 04:07:39,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:07:39,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:07:39,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:07:39,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:07:39,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:07:39,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d1a6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39, skipping insertion in model container [2025-01-09 04:07:39,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:07:39,685 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c[454,467] [2025-01-09 04:07:39,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:07:39,696 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:07:39,704 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c[454,467] [2025-01-09 04:07:39,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:07:39,716 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:07:39,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39 WrapperNode [2025-01-09 04:07:39,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:07:39,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:07:39,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:07:39,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:07:39,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,737 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2025-01-09 04:07:39,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:07:39,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:07:39,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:07:39,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:07:39,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,752 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:07:39,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:07:39,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:07:39,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:07:39,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:07:39,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (1/1) ... [2025-01-09 04:07:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:39,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:39,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:07:39,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:07:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:07:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:07:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:07:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:07:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure id [2025-01-09 04:07:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2025-01-09 04:07:39,861 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:07:39,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:07:39,934 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-01-09 04:07:39,934 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:07:39,940 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:07:39,940 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:07:39,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:07:39 BoogieIcfgContainer [2025-01-09 04:07:39,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:07:39,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:07:39,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:07:39,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:07:39,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:07:39" (1/3) ... [2025-01-09 04:07:39,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef25c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:07:39, skipping insertion in model container [2025-01-09 04:07:39,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:39" (2/3) ... [2025-01-09 04:07:39,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef25c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:07:39, skipping insertion in model container [2025-01-09 04:07:39,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:07:39" (3/3) ... [2025-01-09 04:07:39,950 INFO L128 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2025-01-09 04:07:39,962 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:07:39,963 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG id_i25_o25-1.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:07:40,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:07:40,027 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f713a6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:07:40,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:07:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 04:07:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:07:40,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:40,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:40,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:40,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2025-01-09 04:07:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131615673] [2025-01-09 04:07:40,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:40,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:40,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:07:40,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:07:40,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:40,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:07:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131615673] [2025-01-09 04:07:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131615673] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:07:40,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:07:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:07:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636249078] [2025-01-09 04:07:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:07:40,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:07:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:40,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:07:40,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:07:40,253 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:07:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:40,288 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2025-01-09 04:07:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:07:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:07:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:40,295 INFO L225 Difference]: With dead ends: 25 [2025-01-09 04:07:40,295 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 04:07:40,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:07:40,298 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:40,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 04:07:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-09 04:07:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 04:07:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-01-09 04:07:40,320 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2025-01-09 04:07:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:40,320 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-01-09 04:07:40,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:07:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-01-09 04:07:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 04:07:40,321 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:40,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:40,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:07:40,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:40,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:40,322 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2025-01-09 04:07:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646353596] [2025-01-09 04:07:40,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:40,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:40,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 04:07:40,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 04:07:40,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:40,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 04:07:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646353596] [2025-01-09 04:07:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646353596] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966030453] [2025-01-09 04:07:40,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:40,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:40,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:40,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:40,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:07:40,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 04:07:40,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 04:07:40,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:40,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:40,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:07:40,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 04:07:40,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:07:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966030453] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:40,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:40,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-01-09 04:07:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517272788] [2025-01-09 04:07:40,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:40,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 04:07:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:40,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 04:07:40,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:07:40,623 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 04:07:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:40,655 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2025-01-09 04:07:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:07:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2025-01-09 04:07:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:40,656 INFO L225 Difference]: With dead ends: 22 [2025-01-09 04:07:40,656 INFO L226 Difference]: Without dead ends: 18 [2025-01-09 04:07:40,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:07:40,657 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:40,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-09 04:07:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-09 04:07:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 04:07:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2025-01-09 04:07:40,660 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2025-01-09 04:07:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:40,660 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2025-01-09 04:07:40,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 04:07:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2025-01-09 04:07:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 04:07:40,661 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:40,661 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:40,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:40,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:40,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:40,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2025-01-09 04:07:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947134449] [2025-01-09 04:07:40,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:40,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 04:07:40,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 04:07:40,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:40,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:07:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947134449] [2025-01-09 04:07:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947134449] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008584251] [2025-01-09 04:07:41,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:41,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:41,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:41,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 04:07:41,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 04:07:41,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 04:07:41,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:41,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:41,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 04:07:41,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:07:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008584251] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:41,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2025-01-09 04:07:41,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975104580] [2025-01-09 04:07:41,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:41,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 04:07:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:41,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 04:07:41,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:07:41,344 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:07:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:41,452 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2025-01-09 04:07:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 04:07:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 22 [2025-01-09 04:07:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:41,453 INFO L225 Difference]: With dead ends: 25 [2025-01-09 04:07:41,453 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 04:07:41,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:07:41,454 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:41,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 47 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 04:07:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-09 04:07:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:07:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2025-01-09 04:07:41,462 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2025-01-09 04:07:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:41,462 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2025-01-09 04:07:41,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:07:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2025-01-09 04:07:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 04:07:41,462 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:41,462 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:41,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 04:07:41,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:41,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:41,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2025-01-09 04:07:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:41,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341922506] [2025-01-09 04:07:41,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:41,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-01-09 04:07:41,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 04:07:41,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 04:07:41,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 04:07:41,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341922506] [2025-01-09 04:07:41,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341922506] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677588344] [2025-01-09 04:07:41,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:41,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:41,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:41,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 04:07:41,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-01-09 04:07:41,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 04:07:41,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 04:07:41,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:41,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 04:07:41,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:07:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677588344] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:42,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 17 [2025-01-09 04:07:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9997180] [2025-01-09 04:07:42,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:42,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:42,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:42,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:42,362 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-01-09 04:07:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:42,442 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2025-01-09 04:07:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:07:42,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 28 [2025-01-09 04:07:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:42,443 INFO L225 Difference]: With dead ends: 28 [2025-01-09 04:07:42,443 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 04:07:42,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:07:42,444 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:42,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 04:07:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 04:07:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-09 04:07:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2025-01-09 04:07:42,451 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2025-01-09 04:07:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:42,452 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2025-01-09 04:07:42,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-01-09 04:07:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2025-01-09 04:07:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 04:07:42,453 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:42,453 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:42,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:42,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2025-01-09 04:07:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:42,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791268922] [2025-01-09 04:07:42,656 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:42,661 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 04:07:42,666 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 04:07:42,666 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:07:42,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 04:07:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791268922] [2025-01-09 04:07:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791268922] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932360137] [2025-01-09 04:07:42,801 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:42,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:42,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:42,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:42,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:07:42,837 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 04:07:42,847 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 04:07:42,847 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:07:42,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:42,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:42,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 04:07:42,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 04:07:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932360137] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:43,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:43,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 13] total 20 [2025-01-09 04:07:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277783001] [2025-01-09 04:07:43,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:43,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 04:07:43,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:43,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 04:07:43,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:07:43,548 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:07:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:43,678 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2025-01-09 04:07:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:07:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) Word has length 34 [2025-01-09 04:07:43,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:43,679 INFO L225 Difference]: With dead ends: 43 [2025-01-09 04:07:43,679 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 04:07:43,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:07:43,680 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:43,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 04:07:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2025-01-09 04:07:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 04:07:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2025-01-09 04:07:43,689 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 34 [2025-01-09 04:07:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:43,689 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2025-01-09 04:07:43,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:07:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2025-01-09 04:07:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-09 04:07:43,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:43,690 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:43,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 04:07:43,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:43,894 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:43,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 5 times [2025-01-09 04:07:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164021564] [2025-01-09 04:07:43,894 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:43,902 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 8 equivalence classes. [2025-01-09 04:07:43,920 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 04:07:43,922 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:07:43,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 04:07:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164021564] [2025-01-09 04:07:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164021564] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:44,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942989213] [2025-01-09 04:07:44,121 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:44,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:44,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:07:44,166 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 8 equivalence classes. [2025-01-09 04:07:44,180 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 04:07:44,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:07:44,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:44,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:07:44,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-01-09 04:07:44,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 04:07:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942989213] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:46,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 22 [2025-01-09 04:07:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975776264] [2025-01-09 04:07:46,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:46,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 04:07:46,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:46,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 04:07:46,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:07:46,159 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 22 states, 20 states have (on average 2.1) internal successors, (42), 22 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-01-09 04:07:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:46,270 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2025-01-09 04:07:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 22 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) Word has length 52 [2025-01-09 04:07:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:46,271 INFO L225 Difference]: With dead ends: 49 [2025-01-09 04:07:46,271 INFO L226 Difference]: Without dead ends: 42 [2025-01-09 04:07:46,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 93 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:07:46,272 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:46,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 85 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-09 04:07:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2025-01-09 04:07:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 04:07:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2025-01-09 04:07:46,277 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 52 [2025-01-09 04:07:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:46,277 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2025-01-09 04:07:46,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 22 states have internal predecessors, (42), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-01-09 04:07:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2025-01-09 04:07:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-09 04:07:46,278 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:46,278 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:46,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:07:46,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:46,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:46,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 6 times [2025-01-09 04:07:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079387243] [2025-01-09 04:07:46,484 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:46,488 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 9 equivalence classes. [2025-01-09 04:07:46,498 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 04:07:46,498 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-09 04:07:46,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 10 proven. 132 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-09 04:07:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:46,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079387243] [2025-01-09 04:07:46,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079387243] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:46,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251842441] [2025-01-09 04:07:46,678 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:46,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:46,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:46,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:46,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:07:46,740 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 9 equivalence classes. [2025-01-09 04:07:46,755 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 04:07:46,755 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-09 04:07:46,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:46,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:07:46,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-09 04:07:46,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 04:07:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251842441] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:48,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 21] total 28 [2025-01-09 04:07:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523351400] [2025-01-09 04:07:48,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:48,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:07:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:48,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:07:48,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:07:48,988 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:07:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:49,109 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2025-01-09 04:07:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:07:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 58 [2025-01-09 04:07:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:49,110 INFO L225 Difference]: With dead ends: 52 [2025-01-09 04:07:49,110 INFO L226 Difference]: Without dead ends: 45 [2025-01-09 04:07:49,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=394, Invalid=866, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:07:49,111 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 106 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:49,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 93 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-09 04:07:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2025-01-09 04:07:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 04:07:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2025-01-09 04:07:49,116 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 58 [2025-01-09 04:07:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:49,117 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2025-01-09 04:07:49,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:07:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2025-01-09 04:07:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-01-09 04:07:49,118 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:49,118 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:49,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:07:49,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-09 04:07:49,322 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:49,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 7 times [2025-01-09 04:07:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914027005] [2025-01-09 04:07:49,323 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:49,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-09 04:07:49,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 04:07:49,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:49,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-01-09 04:07:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914027005] [2025-01-09 04:07:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914027005] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986065896] [2025-01-09 04:07:49,534 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:49,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:49,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 04:07:49,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-09 04:07:49,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 04:07:49,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:49,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:49,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:07:49,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-01-09 04:07:49,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 04:07:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986065896] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:52,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:52,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2025-01-09 04:07:52,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371021731] [2025-01-09 04:07:52,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:52,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 04:07:52,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:52,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 04:07:52,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2025-01-09 04:07:52,737 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2025-01-09 04:07:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:52,873 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2025-01-09 04:07:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 04:07:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) Word has length 64 [2025-01-09 04:07:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:52,874 INFO L225 Difference]: With dead ends: 55 [2025-01-09 04:07:52,874 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 04:07:52,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=766, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 04:07:52,879 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:52,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 04:07:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2025-01-09 04:07:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2025-01-09 04:07:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2025-01-09 04:07:52,885 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 64 [2025-01-09 04:07:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:52,885 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2025-01-09 04:07:52,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2025-01-09 04:07:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2025-01-09 04:07:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 04:07:52,886 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:52,886 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:52,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:53,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:53,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:53,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 8 times [2025-01-09 04:07:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503341005] [2025-01-09 04:07:53,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:53,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-09 04:07:53,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 04:07:53,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:53,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-09 04:07:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503341005] [2025-01-09 04:07:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503341005] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637036280] [2025-01-09 04:07:53,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:53,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:53,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:53,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 04:07:53,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-09 04:07:53,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 04:07:53,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:53,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:53,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 04:07:53,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-01-09 04:07:53,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 04:07:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637036280] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:57,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:57,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 29 [2025-01-09 04:07:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865930358] [2025-01-09 04:07:57,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:57,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:07:57,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:57,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:07:57,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:07:57,405 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 29 states have internal predecessors, (55), 13 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:07:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:57,699 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2025-01-09 04:07:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:07:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 29 states have internal predecessors, (55), 13 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) Word has length 70 [2025-01-09 04:07:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:57,702 INFO L225 Difference]: With dead ends: 58 [2025-01-09 04:07:57,702 INFO L226 Difference]: Without dead ends: 51 [2025-01-09 04:07:57,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=1063, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:07:57,703 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:57,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 100 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-01-09 04:07:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2025-01-09 04:07:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2025-01-09 04:07:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2025-01-09 04:07:57,717 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 70 [2025-01-09 04:07:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:57,717 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2025-01-09 04:07:57,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 29 states have internal predecessors, (55), 13 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:07:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2025-01-09 04:07:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-09 04:07:57,722 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:57,722 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:57,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:57,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:57,922 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:57,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 9 times [2025-01-09 04:07:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283296733] [2025-01-09 04:07:57,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:57,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:57,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 12 equivalence classes. [2025-01-09 04:07:57,959 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 76 of 76 statements. [2025-01-09 04:07:57,959 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 04:07:57,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 30 proven. 230 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2025-01-09 04:07:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283296733] [2025-01-09 04:07:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283296733] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321624762] [2025-01-09 04:07:58,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:58,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:58,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:58,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 04:07:58,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 12 equivalence classes. [2025-01-09 04:07:58,575 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 76 of 76 statements. [2025-01-09 04:07:58,575 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 04:07:58,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:58,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 04:07:58,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2025-01-09 04:07:58,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:08:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-09 04:08:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321624762] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:08:03,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:08:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 27] total 34 [2025-01-09 04:08:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65423017] [2025-01-09 04:08:03,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:08:03,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 04:08:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:08:03,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 04:08:03,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 04:08:03,866 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2025-01-09 04:08:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:08:04,036 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2025-01-09 04:08:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:08:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 76 [2025-01-09 04:08:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:08:04,039 INFO L225 Difference]: With dead ends: 61 [2025-01-09 04:08:04,039 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 04:08:04,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 133 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=628, Invalid=1352, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 04:08:04,042 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 169 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:08:04,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 124 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:08:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 04:08:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2025-01-09 04:08:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2025-01-09 04:08:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2025-01-09 04:08:04,050 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 76 [2025-01-09 04:08:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:08:04,050 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2025-01-09 04:08:04,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2025-01-09 04:08:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2025-01-09 04:08:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-09 04:08:04,054 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:08:04,054 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:08:04,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 04:08:04,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:04,255 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:08:04,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:08:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 10 times [2025-01-09 04:08:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:08:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352348505] [2025-01-09 04:08:04,256 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:08:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:08:04,272 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-01-09 04:08:04,286 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 04:08:04,286 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:08:04,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 21 proven. 245 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-01-09 04:08:04,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:08:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352348505] [2025-01-09 04:08:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352348505] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:08:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958763200] [2025-01-09 04:08:04,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:08:04,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:04,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:08:04,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:08:04,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 04:08:04,959 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-01-09 04:08:04,975 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 04:08:04,975 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:08:04,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:04,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 04:08:04,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:08:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-01-09 04:08:05,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:08:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-01-09 04:08:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958763200] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:08:11,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:08:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 29] total 36 [2025-01-09 04:08:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772095473] [2025-01-09 04:08:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:08:11,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:08:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:08:11,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:08:11,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:08:11,545 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 15 states have call predecessors, (29), 18 states have call successors, (29) [2025-01-09 04:08:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:08:11,798 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2025-01-09 04:08:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 04:08:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 15 states have call predecessors, (29), 18 states have call successors, (29) Word has length 82 [2025-01-09 04:08:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:08:11,799 INFO L225 Difference]: With dead ends: 73 [2025-01-09 04:08:11,799 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 04:08:11,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 13 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=790, Invalid=1760, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 04:08:11,800 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 171 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:08:11,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 131 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:08:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 04:08:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2025-01-09 04:08:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2025-01-09 04:08:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2025-01-09 04:08:11,808 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 82 [2025-01-09 04:08:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:08:11,810 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2025-01-09 04:08:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 15 states have call predecessors, (29), 18 states have call successors, (29) [2025-01-09 04:08:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2025-01-09 04:08:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-01-09 04:08:11,811 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:08:11,811 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:08:11,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 04:08:12,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:12,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:08:12,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:08:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 11 times [2025-01-09 04:08:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:08:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224532816] [2025-01-09 04:08:12,016 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:08:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:08:12,024 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 16 equivalence classes. [2025-01-09 04:08:12,043 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 100 of 100 statements. [2025-01-09 04:08:12,043 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-01-09 04:08:12,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2025-01-09 04:08:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:08:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224532816] [2025-01-09 04:08:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224532816] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:08:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046523992] [2025-01-09 04:08:12,344 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:08:12,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:12,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:08:12,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:08:12,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 04:08:12,660 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 16 equivalence classes. [2025-01-09 04:08:12,688 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 100 of 100 statements. [2025-01-09 04:08:12,688 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-01-09 04:08:12,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:12,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 04:08:12,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:08:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2025-01-09 04:08:12,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:08:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-01-09 04:08:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046523992] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:08:24,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:08:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 37 [2025-01-09 04:08:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7536125] [2025-01-09 04:08:24,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:08:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 04:08:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:08:24,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 04:08:24,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 04:08:24,766 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 37 states, 35 states have (on average 2.057142857142857) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (32), 16 states have call predecessors, (32), 18 states have call successors, (32) [2025-01-09 04:08:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:08:24,963 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2025-01-09 04:08:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 04:08:24,964 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.057142857142857) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (32), 16 states have call predecessors, (32), 18 states have call successors, (32) Word has length 100 [2025-01-09 04:08:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:08:24,965 INFO L225 Difference]: With dead ends: 73 [2025-01-09 04:08:24,965 INFO L226 Difference]: Without dead ends: 66 [2025-01-09 04:08:24,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 182 SyntacticMatches, 16 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=854, Invalid=1798, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 04:08:24,966 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 142 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:08:24,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 145 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:08:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-01-09 04:08:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2025-01-09 04:08:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2025-01-09 04:08:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2025-01-09 04:08:24,971 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 100 [2025-01-09 04:08:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:08:24,971 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2025-01-09 04:08:24,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.057142857142857) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (32), 16 states have call predecessors, (32), 18 states have call successors, (32) [2025-01-09 04:08:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2025-01-09 04:08:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 04:08:24,972 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:08:24,972 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:08:24,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 04:08:25,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:08:25,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:08:25,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:08:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 12 times [2025-01-09 04:08:25,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:08:25,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130048240] [2025-01-09 04:08:25,176 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:08:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:08:25,185 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 17 equivalence classes. [2025-01-09 04:08:25,209 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 04:08:25,209 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-01-09 04:08:25,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 52 proven. 458 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-01-09 04:08:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:08:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130048240] [2025-01-09 04:08:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130048240] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:08:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86058931] [2025-01-09 04:08:25,554 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:08:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:08:25,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:08:25,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 04:08:25,988 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 17 equivalence classes. [2025-01-09 04:08:26,012 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 04:08:26,013 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-01-09 04:08:26,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:26,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 04:08:26,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:08:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-01-09 04:08:26,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:08:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-01-09 04:08:40,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86058931] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:08:40,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:08:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 37] total 44 [2025-01-09 04:08:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964912595] [2025-01-09 04:08:40,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:08:40,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 04:08:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:08:40,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 04:08:40,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1379, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 04:08:40,834 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) [2025-01-09 04:08:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:08:41,203 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2025-01-09 04:08:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 04:08:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) Word has length 106 [2025-01-09 04:08:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:08:41,204 INFO L225 Difference]: With dead ends: 76 [2025-01-09 04:08:41,204 INFO L226 Difference]: Without dead ends: 69 [2025-01-09 04:08:41,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 188 SyntacticMatches, 17 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1138, Invalid=2402, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 04:08:41,209 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 125 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:08:41,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 164 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:08:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-01-09 04:08:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2025-01-09 04:08:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2025-01-09 04:08:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2025-01-09 04:08:41,218 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2025-01-09 04:08:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:08:41,218 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2025-01-09 04:08:41,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (39), 18 states have call predecessors, (39), 21 states have call successors, (39) [2025-01-09 04:08:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2025-01-09 04:08:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-09 04:08:41,219 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:08:41,219 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:08:41,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 04:08:41,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:41,422 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:08:41,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:08:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437418, now seen corresponding path program 13 times [2025-01-09 04:08:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:08:41,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24093527] [2025-01-09 04:08:41,423 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:08:41,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:08:41,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 04:08:41,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 04:08:41,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:08:41,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2025-01-09 04:08:41,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:08:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24093527] [2025-01-09 04:08:41,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24093527] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:08:41,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466668800] [2025-01-09 04:08:41,958 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:08:41,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:08:41,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:08:41,959 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:08:41,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 04:08:42,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 04:08:42,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 04:08:42,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:08:42,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:08:42,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 04:08:42,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:08:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2025-01-09 04:08:42,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:09:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-09 04:09:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466668800] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:09:00,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:09:00,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 41 [2025-01-09 04:09:00,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073712139] [2025-01-09 04:09:00,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:09:00,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 04:09:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:09:00,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 04:09:00,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1218, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 04:09:00,670 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2025-01-09 04:09:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:09:00,892 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2025-01-09 04:09:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 04:09:00,892 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) Word has length 112 [2025-01-09 04:09:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:09:00,893 INFO L225 Difference]: With dead ends: 79 [2025-01-09 04:09:00,893 INFO L226 Difference]: Without dead ends: 72 [2025-01-09 04:09:00,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 204 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1068, Invalid=2238, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 04:09:00,894 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:09:00,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 160 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:09:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-09 04:09:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2025-01-09 04:09:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2025-01-09 04:09:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2025-01-09 04:09:00,899 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 112 [2025-01-09 04:09:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:09:00,900 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2025-01-09 04:09:00,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2025-01-09 04:09:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2025-01-09 04:09:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 04:09:00,901 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:09:00,901 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:09:00,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 04:09:01,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:09:01,104 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:09:01,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:09:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash 55840780, now seen corresponding path program 14 times [2025-01-09 04:09:01,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:09:01,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911307042] [2025-01-09 04:09:01,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:09:01,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:09:01,133 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-01-09 04:09:01,149 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 04:09:01,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:09:01,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:09:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2025-01-09 04:09:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:09:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911307042] [2025-01-09 04:09:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911307042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:09:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848883961] [2025-01-09 04:09:01,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:09:01,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:09:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:09:01,543 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:09:01,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 04:09:02,377 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-01-09 04:09:02,400 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 04:09:02,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:09:02,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:09:02,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-09 04:09:02,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:09:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2025-01-09 04:09:02,493 INFO L312 TraceCheckSpWp]: Computing backward predicates...